3 papers
quant-ph2025
Relativistic implications of entropy and purity
Joseph Balsells, Martin Bojowald
A quantum object is extended by virtue of uncertainty. When subjected to gravity, different parts of its wave function experience distinct local relativistic effects, leading to ti…
quant-ph2025
Quantum proper time: A Finsler space from entropy and purity
Joseph Balsells, Martin Bojowald
A quantum clock cannot be modeled as a point mass moving along a single geodesic if it is in a state with nonzero position fluctuations. Instead, it is an extended object subject t…
gr-qc2024
Geometry and proper time of a relativistic quantum clock
Joseph Balsells, Martin Bojowald
Classical clocks measure proper time along their worldline, and Riemannian geometry provides tools for predicting the time shown by clocks in both flat and curved spacetimes. Commo…